The crumbling structure is a rare surviving relic of the area's bygone mining industry.

One of the largest Buddhist communities in the West sits on the site of an old hospital.

The largest glacial erratic boulder on Cape Cod.

A subterranean haunt where wine and homemade biscottis are always on the menu.

The shattered remnants of a meteor that struck Santa Fe more than a billion years ago.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Journey through the largest remaining peat bogs in the contiguous United States to see the wilderness as it once was.

The water in this preserved area spawns vegetation that gives it a deep green color.

A former 19th-century tavern, famous for its peach brandy and honey concoction.

The remains of a large iron mill that once stood in the remote woods of northern Maine.

This large pile of traveler-curated rocks by the dry lakebed is a longstanding tradition on the Old Mojave Road.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

For decades, this waterfall remained hidden because of an artificial dam.

An ancient glacial pothole waterfall in the heart of the Green Mountains.

The lowest point in South Dakota and the source of the Minnesota River.

Two creeks flow out of either end of this canyon in opposite directions.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

This old train trestle and collapsed tunnel once allowed the railroad to negotiate the steep slopes of the Colorado Rockies.

This tiny 19th-century tunnel was built so a man could move his cows from one field to another.

The largest copper mine in Arizona, this enormous open pit emerges from the hills like an alien landscape.

A comedy troupe's collection of bizarre humor.

A peculiar forest that was handcrafted for government experiments.

This petite park lets visitors see and touch examples of fossilized dinosaur tracks.